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Table 6 Impact of Spray drying conditions on docosahexaenoic fatty acids retention in designer egg dried powder at different days and storage intervals

From: Fatty acids characterization and oxidative stability of spray dried designer egg powder

Spray dryer process run

Independent variables

DHA (mg/50 g egg)

Inlet air temperature (°C)

Feed flow rate (mL/hr)

Atomization speed (rpm)

Outlet temperature (°C)

0 Day

Storage at Temperature 4 °C

Storage at Temperature 25 °C

30 Days

60 Days

30 Days

60 Days

1

160 (− 1)

300 (0)

16,000 (− 1)

70 (0)

19.46 ± 0.88a

18.21 ± 0.81ab

14.15 ± 0.79cd

15.15 ± 0.79c

10.45 ± 0.73ef

2

180 (0)

200 (−1)

20,000 (0)

60 (− 1)

18.07 ± 0.85ab

17.85 ± 0.71b

13.65 ± 0.70d

14.65 ± 0.70cd

9.63 ± 0.71f

3

180 (0)

300 (0)

16,000 (−1)

80 (+ 1)

17.62 ± 0.79b

16.40 ± 0.74bc

12.35 ± 0.71de

13.55 ± 0.71d

8.55 ± 0.67fg

4

180 (0)

400 (+ 1)

20,000 (0)

60 (−1)

19.32 ± 0.72a

18.20 ± 0.69ab

14.11 ± 0.63cd

15.22 ± 0.63c

10.76 ± 0.64ef

5

180 (0)

200 (−1)

16,000 (− 1)

70 (0)

18.45 ± 0.73ab

17.21 ± 0.68b

13.18 ± 0.61d

14.00 ± 0.61cd

9.67 ± 0.65f

6

160 (− 1)

300 (0)

24,000 (+ 1)

70 (0)

17.42 ± 0.81b

16.12 ± 0.78bc

12.02 ± 0.75de

13.51 ± 0.75d

8.45 ± 0.71fg

7(C1)

180 (0)

300 (0)

20,000 (0)

70 (0)

17.44 ± 0.80b

16.11 ± 0.71bc

12.01 ± 0.70de

13.59 ± 0.70d

8.41 ± 0.63fg

8(C2)

180 (0)

300 (0)

20,000 (0)

70 (0)

17.46 ± 0.78b

16.13 ± 0.72bc

12.03 ± 0.71de

13.58 ± 0.71d

8.66 ± 0.71fg

9

180 (0)

300 (0)

24,000 (+ 1)

60 (−1)

17.48 ± 0.82b

16.18 ± 0.74bc

12.09 ± 0.75de

13.52 ± 0.75d

8.72 ± 0.72fg

10

200 (+ 1)

300 (0)

24,000 (+ 1)

70 (0)

15.49 ± 0.79c

14.21 ± 0.69cd

10.10 ± 0.64ef

11.17 ± 0.64e

6.01 ± 0.63h

11(C3)

180 (0)

300 (0)

20,000 (0)

70 (0)

17.41 ± 0.83b

16.15 ± 0.81bc

12.04 ± 0.88de

13.49 ± 0.88d

8.58 ± 0.81fg

12(C4)

180 (0)

300 (0)

20,000 (0)

70 (0)

17.43 ± 0.77b

16.19 ± 0.70bc

12.11 ± 0.73de

13.33 ± 0.73d

8.49 ± 0.73fg

13

180 (0)

200 (−1)

20,000 (0)

80 (+ 1)

16.27 ± 0.84bc

15.00 ± 0.72c

11.85 ± 0.81e

12.89 ± 0.81de

7.54 ± 0.82g

14

200 (+ 1)

400 (+ 1)

20,000 (0)

70 (0)

17.08 ± 0.76b

16.22 ± 0.71bc

12.66 ± 0.73de

13.77 ± 0.73d

8.09 ± 0.71fg

15

160 (−1)

400 (+ 1)

20,000 (0)

70 (0)

19.11 ± 0.72a

18.35 ± 0.70ab

14.63 ± 0.71cd

15.79 ± 0.71c

10.00 ± 0.72ef

16

180 (0)

400 (+ 1)

20,000 (0)

80 (+ 1)

17.23 ± 0.85b

16.01 ± 0.88bc

12.89 ± 0.83de

13.91 ± 0.83d

8.55 ± 0.83fg

17

160 (−1)

300 (0)

20,000 (0)

80 (+ 1)

17.65 ± 0.78b

16.39 ± 0.72bc

12.21 ± 0.76de

13.41 ± 0.76d

8.68 ± 0.75fg

18

200 (+ 1)

300 (0)

20,000 (0)

80 (+ 1)

15.62 ± 0.86c

14.39 ± 0.82cd

10.23 ± 0.85ef

11.81 ± 0.85e

6.58 ± 0.84h

19

160 (−1)

200 (−1)

20,000 (0)

70 (0)

18.10 ± 0.89ab

17.90 ± 0.83b

13.59 ± 0.84d

14.73 ± 0.84cd

9.55 ± 0.82f

20

180 (0)

400 (+ 1)

16,000 (−1)

70 (0)

19.03 ± 0.91a

18.79 ± 0.93ab

14.61 ± 0.92cd

15.69 ± 0.92c

10.80 ± 0.91ef

21

180 (0)

300 (0)

24,000 (+ 1)

80 (+ 1)

15.62 ± 0.69c

14.33 ± 0.63cd

10.11 ± 0.65ef

11.21 ± 0.65e

6.78 ± 0.65h

22

180 (0)

300 (0)

16,000 (−1)

60 (−1)

19.41 ± 0.92a

18.19 ± 0.96ab

14.01 ± 0.93cd

15.31 ± 0.93c

10.11 ± 0.89ef

23

180 (0)

400 (+ 1)

24,000 (+ 1)

70 (0)

17.02 ± 0.75b

16.60 ± 0.71bc

12.49 ± 0.72de

13.69 ± 0.72d

8.41 ± 0.74fg

24

160 (−1)

300 (0)

20,000 (0)

60 (−1)

19.43 ± 0.88a

18.40 ± 0.82ab

14.23 ± 0.85cd

15.99 ± 0.85c

10.21 ± 0.85ef

25(C5)

180 (0)

300 (0)

20,000 (0)

70 (0)

17.40 ± 0.72b

16.22 ± 0.76bc

12.09 ± 0.79de

13.40 ± 0.79d

8.55 ± 0.75fg

26

200 (+ 1)

300 (0)

16,000 (−1)

70 (0)

17.45 ± 0.82b

16.25 ± 0.79bc

12.10 ± 0.80de

13.05 ± 0.80d

8.59 ± 0.84fg

27

180 (0)

200 (−1)

24,000 (+ 1)

70 (0)

16.04 ± 0.77bc

15.30 ± 0.71c

11.63 ± 0.75e

12.91 ± 0.75de

7.98 ± 0.73g

28

200 (+ 1)

200 (−1)

20,000 (0)

70 (0)

16.09 ± 0.79bc

15.30 ± 0.74c

11.51 ± 0.76e

12.72 ± 0.76de

7.94 ± 0.72g

29

200 (+ 1)

300 (0)

20,000 (0)

60 (−1)

17.46 ± 0.83b

16.22 ± 0.81bc

12.00 ± 0.82de

13.20 ± 0.82d

8.12 ± 0.82fg

  1. C1,C2,C3,C4,C5represent spraying drying process at center points
  2. Experimental model = Box-Behnken design
  3. Total number of spray drying treatments = 29
  4. No of replicates = 03
  5. a-hvalues with similar letters show homogenous group within row and column (p > 0.05)